#VU49127 Out-of-bounds read in TCP/IP stack - CVE-2020-27336

Vulnerability identifier: #VU49127

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-27336

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
TCP/IP stack
Other software / Other software solutions

Vendor: Placeful Inc.

Description

The vulnerability allows a remote attacker to perform a denial of service attack..

The vulnerability exists due to a boundary condition within the IPv6 component in Treck TCP/IP. A remote attacker can send specially crafted packets to the system, trigger out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TCP/IP stack: 6.0.1.66 - 6.0.1.67

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External links
https://treck.com/vulnerability-response-information/
https://ics-cert.us-cert.gov/advisories/icsa-20-353-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.